통일비용과 남북협력기금 : 독일통일로부터의 교훈

신동천,이은국,오재록 연세대학교 통일연구원 2008 통일연구 Vol.12 No.1

The purpose of the paper is to estimate an optimal size of the inter-Korean Cooperation Fund. The inter-Korean Cooperation Fund was established by the South Korean Government to support the cooperation and exchange between the South and North Korea on the purpose of the reduction of tension and the peaceful unification in the Korean peninsula. From the German unification experience, we learned that the unification cost was too costly to the German people. The German government spent 5% of GDP annually for 10 years after unification in order to reduce the economic gap between the East and West Germany. Currently the North Korean economic situation gets much worse than that of the former East Germany. If the unification is achieved under the current situation, the South Korea will face unbearable economic burden, therefore the South Korean government should increase the size of the inter-Korean Cooperation Fund in order to mitigate costly unification cost in the future, In consideration of the German experience, we suggest that the optimal annual accumulation of the Fund be 3% of GDP.

關稅引下와 韓國의 國際貿易 : 일반균형모형을 이용한 模擬分析

申東天,辛承官 延世大學校經濟硏究所 1995 延世經濟硏究 Vol.2 No.2

한국은 1980년대 이후 점차적으로 관세를 인하하여 그 이전에 비해 상당한 정도의 무역자유화를 이룩하였다. 그러나 WTO의 출범과 함께 국내시장개방이 더욱 가속화될 전망이며, 이에 따라 한국의 무역 및 산업구조도 변화할 것으로 보인다. 본 연구의 목적은 이러한 무역자유화가 소규모 개방경제로서의 한국의 국제무역과 산업구조에 미치는 영향을 평가하는 것이다. 이러한 목적을 위해 계산가능한 일반균형모형(CGE)을 이용하여 線形關稅引下와 調和關稅引下의 효과를 비교하고 관세를 완전히 철폐하는 경우를 모의분석하고 분석결과를 논의한다.

한국판 소아 양극성장애 설문지 2.0(Child Bipolar Questionnaire 2.0)의 신뢰도 및 타당도 연구

천근아,신동원,김보라,소윤섭,전진용,송동호 大韓神經精神醫學會 2008 신경정신의학 Vol.47 No.3

Objectives : The Child Bipolar Questionnaire 2.0 (CBQ 2.0) is a rapid screener with a Core Index subscale of symptom dimensions frequently reported in childhood-onset bipolar disorder (BD) and scoring algorithms for DSM-Ⅳ BD, with and without ADHD, and the proposed Narrow, Broad, and Core phenotypes. This report provides preliminary data on the reliability and validity of the CBQ 2.0-Korean version. Methods : Core Index subscale to effectively predict diagnostic classification by structured interview was assessed using the Kiddie-Schedule for Affective Disorders and Schizophrenia-Present and Lifetime Version-Korean Version (K-SADS-PL-K). Test-retest and inter-rater reliabilities of the CBQ 2.0 were assessed. Correlation of Korean Child Behavior Checklist (K-CBCL) with CBQ 2.0-Korean version was performed. Results : The CBQ 2.0 screening algorithms performed with a specificity of 66.7% and a sensitivity of 94.7% in classifying subjects with K-SADS-PL-K diagnosis of BD vs. no BD. The Core Index subscale had “good” agreement with K-SADS-PL-K diagnosis (Kappa=0.676) in identifying BD, ADHD-only, and no diagnosis. Conclusion : This preliminary data is from a sample derived from the child and adolescent psychiatric clinics, further validation is needed with community based samples in which childhood-onset BD is rarer and diagnoses more diverse. The CBQ 2.0-Korean version shows potential for rapid and economically feasible identification of possible childhood-onset BD cases as defined by DSM-Ⅳ criteria as well as by alternate disease phenotypes.

LRFD 설계법에 의한 강박스거더 합성형교 설계 프로그램

김천용,권태형,이창열,신동구 明知大學校 産業技術硏究所 2006 産業技術硏究所論文集 Vol.25 No.-

A C++ based computer program for the design of composite steel-concrete box girder by the LRFD method is developed. The program consists of a main program, a header program, and 16 function programs. The load analysis for live and dead loads is performed by using the influence line based on the 3-moment method. For the design of box girder, strength limit states, fatigue limit state, and service limit state are considered. In addition, the constructibility of the girder is also checked. The validity of the program is demonstrated by comparing the design result for 3-span continuous box girder by the present program with the one by hand-calculation.

경부도상 피판을 이용한 구강내 결손부의 재건

양동규,신상훈,서종천,이성근,김종렬 大韓顎顔面成形再建外科學會 1995 Maxillofacial Plastic Reconstructive Surgery Vol.17 No.3

Various cutaneous as well as myocutaneous flaps have been designed for the reconstruction of tissue defects caused by the excision of oral cancer. Among these flaps, cervical island skin flap have been introduced by Farr et al and more have developed by Tashiro et al. This flap has many advantages. The flap minimizes donor size by use of cervical operation wound, flap size available is adequate for most oral defects and the procedure is relatively simple and time saving. However, this flap is not applicable in patients where there are large tissue defects and metastasis is suspected. We used this flap for it's rapid simple, and effective, primary closure of oral defects after cancer ablation and we have found this flap very useful for the reconstruction of relatively small oral defects.

무역자유화의 경제적 효과 : CGE 모형과 FCGE 모형을 이용한 비교 분석 A Comparative Analysis using CGE and FCGE Models

崔煥,申東天 한국국제경제학회 2004 국제경제연구 Vol.10 No.2

많은 연구자들은 관세철폐와 같은 무역자유화의 경제적 효과를 단지 실물부문만을 고려한 CGE(computable general equilibrium) 모형을 이용하여 계측하였다. 하지만 현실적으로 일국의 국민경제는 실물부문과 금융부문이 상호 연계되어 있다. 따라서 금융부문이 고려되지 않은 실물 CGE 모형을 이용한 분석에서는 관세철폐의 경제적 효과를 과소 혹은 과대평가 할 가능성이 있다. 금융연산균형(financial CGE: FCGE) 모형은 실물 CGE 모형에 금융부문을 포함시켜 실물부문과 금융부문 간의 상호작용을 명시적으로 고려할 수 있는 계산 모형이다. 본 논문에서는 무역자유화 -관세철폐-의 경제적 효과를 FCGE 모형을 이용하여 계측하고, 그 분석결과를 실물 CGE 모형을 이용한 분석결과와 비교하였다. 분석결과에 따르면, 관세철폐는 총수입과 총수출을 증가시킨 반면, 총산출을 감소시키는 것으로 나타났다. CGE 분석의 경우 물가수준은 환율의 고정성 가정 하에서 하락하는 것으로 나타난 반면, FCGE 분석의 경우 물가수준은 환율의 신축성 가정 하에서 상승하는 것으로 나타났다. 결과적으로 실질 GDP는 두 경우 모두 증가하는 것으로 나타났다. 하지만 FCGE 분석의 경우 실질 GDP 증가율이 CGE 분석의 경우 실질 GDP증가율보다 더 낮은 것으로 나타났다. 또한 동등변동으로 측정된 사회후생수준은 CGE 분석의 경우 증가하는 것으로 나타난 반면 FCGE 분석의 경우 감소하는 것으로 나타났다 이러한 분석결과는 CGE 모형을 이용한 기존의 연구들이 관세철폐와 같은 무역자유화의 경제적 효과를 과대평가 했을 가능성이 있음을 시사한다. Many researchers have evaluated the economic effects of trade liberalization such as the tariff abolition by using a CGE(computable general equilibrium) model with only real sector. However, the national economy consists of both real and financial sectors which are interlinked. There is a possibility to under - or over - estimate the economic effects of the tariff abolition in an analysis utilizing a CGE model without financial sector. A real CGE model can be extended to a FCGE(financial CGE) model by adding the financial sector to it and this extension enables us to consider the interaction of the real and financial sectors explicitly. This paper evaluated the economic effects of trade liberalization - the tariff abolition - by using a FCGE model and compared the result with that of the CGE analysis without financial sector. The simulation results show that the tariff reduction increases both aggregate import and export while decreasing aggregate output. Also, the level of price index in the CGE analysis falls under the fixed exchange rate, but the level of price index and exchange rate in FCGE analysis rise under the flexible exchange rate. Consequently, real GDP in-creases in both CGE and FCGE analyses, but the rate of increase in real GDP in the FCGE analysis is less than the rate of increase in real GDP in the CGE analysis. Also, the level of social welfare evaluated by equivalent variation increases in the CGE analysis while it decreases in the FCGE analysis. This suggests that the established results obtained by a real CGE analysis might overestimate the economic effects of trade liberalization such as the tariff abolition.

Aspergillus sp. ISR 균주를 통한 콜레스테롤 합성저해제 lovastain의 생산

박상은,조미현,신동화,황승환,박천석 경희대학교식량자원개발연구소 2005 硏究論文集 Vol.24 No.-

본 연구에서 한국 토양에서 분리된 lovastatin 생산 균주인 Aspergillus sp. ISR 균주를 이용하여 여러 배지 조성 성분이 lovastatin의 생산에 미치는 영향을 관찰하였다. 탄소원으로는 lactose보다 glycerol 5%가 가장 효과적이었으며 질소원과 인산염의 경우는 기본 RPM배지 조성과 농도에서 보다 효과적인 것을 발견하지 못하였다. 복합영양원으로 rapeseed meal 보다는 대두박이 보다 효과적이어서 저렴한 배지원으로 사용이 가능할 것으로 사료된다. 최종적으로 최적화된 배지를 사용하여 52 mg·L^(-1)의 lovastatin을 생산할 수 있었고 이는 기존의 RPM 배지보다 수율이 4.5배 증가한 것이다. 좀 더 효과적인 lovastatin의 생산을 위하여 회분식 발효에 대한 연구와 분자유전학적인 연구를 통한 고생산 균주의 제조에 대한 연구가 진행중이다. Effects of various nutritional components on the production of lovastatin were investigated in the Aspergillus sp. ISR. Among various carbon (C) sources, glycerol was determined to be the most effective C source at the concentration of 5% (v/v). In case of nitrogen sources, 0.2% (w/v) KNO_(3) efficiently induced the lovastatin production in Aspergillus sp. ISR. Interestingly, the addition of soybean meal into the production medium enhanced the lovastatin production compared to the rapeseed meal. Conclusively, Aspergillus sp. ISR produced 52 mg·L^(-1) of lovastatin in the optimized medium containing 5% (v/v) glycerol, 0.2% (w/v) KNO_(3), 0.3% (w/v) KH_(2)PO_(4), and 0.3% (w/v) soybean meal, which was 4.5 times higher than the amount produced using the standard RPM (rapeseedmeal production medium).

메치실린 내성 황식 포도상구균(MRSA)에 대한 소독제 및 항생제의 살균력 효능

이희중,나영천,유석근,김동철,김신무 大韓成形外科學會 2002 Archives of Plastic Surgery Vol.29 No.6

메치실린 내성 황색 포도상구균(MRSA)에 대한 소독제 및 항생제의 살균력 효능

이화중,나영천,유석근,김동철,김신무 大韓成形外科學會 2002 Archives of Plastic Surgery Vol.29 No.6

우리나라 한중콘크리트 적용기간의 변화에 관한 고찰

한민철,김경민,신동안,윤기원,한천구 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

In this paper. variations of the period of cold weather concrete in Korea are discussed based on the climate data of Korean Meteorological Adminstration(KMA). Determination of the period of cold weather concrete with the region is done by following Korean Concrete Institute(KCD, American Concrete Institute(ACD and AIJ(Architectural Institute of Japan(AIJ) specification. Present study is compared with previous study done by the authors. Period of cold weather concrete is found to increase with high altitude and in-land and mountain area. Period of cold weather concrete by present study is shorted compared with that of previous study by about 3~6 days regardless of applied specification. Especially. the period of cold weather concrete at southern region near sea is reduced remarkably compared with that of previous study. This is due the rise of mean air temperature by global warming. In the scope of present study, period of cold weather concrete is provided with table and map diagram.